Possibly. Apple had used the A10 in the 7th generation iPad released in September 2019 so it's not quite as old in terms of prime usage as the iPhone would suggest. iPhones have often been a few generations ahead of other Apple devices.
The Apple A10 first released 5.5 years ago in the iPhone 7 Geekbenches at 555 single-core in the iPod (1.6GHz) and 722-750 in the iPhone 7/iPad (2.3GHz). Multicore is 1069 for the iPod and 1280-1398 for iPhone/iPad. That single-core speed matches up nicely against processors used in current Android phones like the Snapdragon 690 (571-590), Snapdragon 778G (714-777), Snapdragon 750 (582-643), or Snapdragon 765G (570-593). It's kinda amazing how Apple's A10 from 2016 matches up against the best non-flagship (non-8-series) Qualcomm processors for single-core performance.
I'd guess it might be more around how long Apple wants to support iOS on the hardware. The iPhone 6s (A9) has access to the latest iOS (7 major versions), but I think there's a decent chance that it won't get iOS 16. That would mean Apple would support the iPhone 6s for 6 years post-introduction and 4 years post-discontinuation. If Apple wants to support the iPod touch for a couple years post-discontinuation, they'd probably want to discontinue it now so that they can stop iOS updates in 2-3 years. If they stopped iOS upgrades in 2-3 years, that would mean supporting the iPhone 7 for 7-8 years. That's quite the lifespan for that hardware.
The Apple A10 first released 5.5 years ago in the iPhone 7 Geekbenches at 555 single-core in the iPod (1.6GHz) and 722-750 in the iPhone 7/iPad (2.3GHz). Multicore is 1069 for the iPod and 1280-1398 for iPhone/iPad. That single-core speed matches up nicely against processors used in current Android phones like the Snapdragon 690 (571-590), Snapdragon 778G (714-777), Snapdragon 750 (582-643), or Snapdragon 765G (570-593). It's kinda amazing how Apple's A10 from 2016 matches up against the best non-flagship (non-8-series) Qualcomm processors for single-core performance.
I'd guess it might be more around how long Apple wants to support iOS on the hardware. The iPhone 6s (A9) has access to the latest iOS (7 major versions), but I think there's a decent chance that it won't get iOS 16. That would mean Apple would support the iPhone 6s for 6 years post-introduction and 4 years post-discontinuation. If Apple wants to support the iPod touch for a couple years post-discontinuation, they'd probably want to discontinue it now so that they can stop iOS updates in 2-3 years. If they stopped iOS upgrades in 2-3 years, that would mean supporting the iPhone 7 for 7-8 years. That's quite the lifespan for that hardware.